private void commandKill(StringTokenizer t) throws NoSessionException {
// ### Should change the way in which thread ids and threadgroup names
// ### are distinguished.
if (!t.hasMoreTokens()) {
env.error("Usage: kill <threadgroup name> or <thread id>");
return;
}
while (t.hasMoreTokens()) {
String idToken = t.nextToken();
ThreadReference thread = findThread(idToken);
if (thread != null) {
runtime.stopThread(thread);
env.notice("Thread " + thread.name() + " killed.");
return;
} else {
/* Check for threadgroup name, NOT skipping "system". */
// ### Should skip "system"? Classic 'jdb' does this.
// ### Should deal with possible non-uniqueness of threadgroup names.
ThreadGroupIterator itg = allThreadGroups();
while (itg.hasNext()) {
ThreadGroupReference tg = itg.nextThreadGroup();
if (tg.name().equals(idToken)) {
ThreadIterator it = new ThreadIterator(tg);
while (it.hasNext()) {
runtime.stopThread(it.nextThread());
}
env.notice("Threadgroup " + tg.name() + "killed.");
return;
}
}
env.failure("\"" + idToken + "\" is not a valid threadgroup or id.");
}
}
}
private ThreadReference findThread(String idToken) throws NoSessionException {
String id;
ThreadReference thread = null;
if (idToken.startsWith("t@")) {
id = idToken.substring(2);
} else {
id = idToken;
}
try {
ThreadReference[] threads = threads();
long threadID = Long.parseLong(id, 16);
for (ThreadReference thread2 : threads) {
if (thread2.uniqueID() == threadID) {
thread = thread2;
break;
}
}
if (thread == null) {
// env.failure("No thread for id \"" + idToken + "\"");
env.failure("\"" + idToken + "\" is not a valid thread id.");
}
} catch (NumberFormatException e) {
env.error("Thread id \"" + idToken + "\" is ill-formed.");
thread = null;
}
return thread;
}
private void commandWhere(StringTokenizer t, boolean showPC) throws NoSessionException {
ThreadReference current = context.getCurrentThread();
if (!t.hasMoreTokens()) {
if (current == null) {
env.error("No thread specified.");
return;
}
dumpStack(current, showPC);
} else {
String token = t.nextToken();
if (token.toLowerCase().equals("all")) {
ThreadIterator it = allThreads();
while (it.hasNext()) {
ThreadReference thread = it.next();
out.println(thread.name() + ": ");
dumpStack(thread, showPC);
}
} else {
ThreadReference thread = findThread(t.nextToken());
// ### Do we want to set current thread here?
// ### Should notify user of change.
if (thread != null) {
context.setCurrentThread(thread);
}
dumpStack(thread, showPC);
}
}
}
private int printThreadGroup(OutputSink out, ThreadGroupReference tg, int iThread) {
out.println("Group " + tg.name() + ":");
List<ThreadReference> tlist = tg.threads();
int maxId = 0;
int maxName = 0;
for (int i = 0; i < tlist.size(); i++) {
ThreadReference thr = tlist.get(i);
int len = Utils.description(thr).length();
if (len > maxId) {
maxId = len;
}
String name = thr.name();
int iDot = name.lastIndexOf('.');
if (iDot >= 0 && name.length() > iDot) {
name = name.substring(iDot + 1);
}
if (name.length() > maxName) {
maxName = name.length();
}
}
String maxNumString = String.valueOf(iThread + tlist.size());
int maxNumDigits = maxNumString.length();
for (int i = 0; i < tlist.size(); i++) {
ThreadReference thr = tlist.get(i);
char buf[] = new char[80];
for (int j = 0; j < 79; j++) {
buf[j] = ' ';
}
buf[79] = '\0';
StringBuffer sbOut = new StringBuffer();
sbOut.append(buf);
// Right-justify the thread number at start of output string
String numString = String.valueOf(iThread + i + 1);
sbOut.insert(maxNumDigits - numString.length(), numString);
sbOut.insert(maxNumDigits, ".");
int iBuf = maxNumDigits + 2;
sbOut.insert(iBuf, Utils.description(thr));
iBuf += maxId + 1;
String name = thr.name();
int iDot = name.lastIndexOf('.');
if (iDot >= 0 && name.length() > iDot) {
name = name.substring(iDot + 1);
}
sbOut.insert(iBuf, name);
iBuf += maxName + 1;
sbOut.insert(iBuf, Utils.getStatus(thr));
sbOut.setLength(79);
out.println(sbOut.toString());
}
for (ThreadGroupReference tg0 : tg.threadGroups()) {
if (!tg.equals(tg0)) { // TODO ref mgt
iThread += printThreadGroup(out, tg0, iThread + tlist.size());
}
}
return tlist.size();
}
@Nullable
public StackFrame getStackFrame() {
try {
return myThreadReference.frame(myIndex);
} catch (Throwable t) {
LOG.error(t);
return null;
}
}
/** if this line can not be current => stepOver & return true. return false on the other hand. */
boolean resolveCanBeCurrent(ThreadReference tr) {
try {
Location l = tr.frame(0).location();
if (l == null) return false;
return resolveCanBeCurrent(
tr, Utils.getLineForSource(l.declaringType().name(), l.sourceName(), l.lineNumber()));
} catch (Exception e) {
}
return false;
}
public void resume() {
switch (suspendPolicy()) {
case EventRequest.SUSPEND_ALL:
vm.resume();
break;
case EventRequest.SUSPEND_EVENT_THREAD:
ThreadReference thread = eventThread();
if (thread == null) {
throw new InternalException("Inconsistent suspend policy");
}
thread.resume();
break;
case EventRequest.SUSPEND_NONE:
// Do nothing
break;
default:
throw new InternalException("Invalid suspend policy");
}
}
private void dumpStack(ThreadReference thread, boolean showPC) {
// ### Check for these.
// env.failure("Thread no longer exists.");
// env.failure("Target VM must be in interrupted state.");
// env.failure("Current thread isn't suspended.");
// ### Should handle extremely long stack traces sensibly for user.
List<StackFrame> stack = null;
try {
stack = thread.frames();
} catch (IncompatibleThreadStateException e) {
env.failure("Thread is not suspended.");
}
// ### Fix this!
// ### Previously mishandled cases where thread was not current.
// ### Now, prints all of the stack regardless of current frame.
int frameIndex = 0;
// int frameIndex = context.getCurrentFrameIndex();
if (stack == null) {
env.failure("Thread is not running (no stack).");
} else {
OutputSink out = env.getOutputSink();
int nFrames = stack.size();
for (int i = frameIndex; i < nFrames; i++) {
StackFrame frame = stack.get(i);
Location loc = frame.location();
Method meth = loc.method();
out.print(" [" + (i + 1) + "] ");
out.print(meth.declaringType().name());
out.print('.');
out.print(meth.name());
out.print(" (");
if (meth.isNative()) {
out.print("native method");
} else if (loc.lineNumber() != -1) {
try {
out.print(loc.sourceName());
} catch (AbsentInformationException e) {
out.print("<unknown>");
}
out.print(':');
out.print(loc.lineNumber());
}
out.print(')');
if (showPC) {
long pc = loc.codeIndex();
if (pc != -1) {
out.print(", pc = " + pc);
}
}
out.println();
}
out.show();
}
}
/** Executes breakpoint hit event. */
public void exec(com.sun.jdi.event.Event ev) {
// S ystem.out.println ("exec "); // NOI18N
removeStepRequest();
StepEvent event = (StepEvent) ev;
ThreadReference tr = event.thread();
Location loc = event.location();
int ln = -1;
String methodName = "?"; // NOI18N
String className = "?"; // NOI18N
String lineNumber = "?"; // NOI18N
String threadName = tr.name();
Line l = null;
if (loc != null) {
if (loc.method() != null) methodName = loc.method().name();
className = loc.declaringType().name();
ln = loc.lineNumber();
if (ln >= 0) lineNumber = "" + loc.lineNumber();
}
if (ln != -1)
try {
l = Utils.getLineForSource(className, loc.sourceName(), ln);
} catch (AbsentInformationException e) {
l = Utils.getLine(className, ln);
}
if (resolveCanBeCurrent(tr, l))
// if this line can not be current resolveCanBeCurrent () calls stepOver
return;
// line can be current
if ((l == null) && (getLastAction() == ACTION_TRACE_INTO))
// try to find another "intelligent" line of code
traceToSourceCode(tr);
// you know - intelligent means that one with source code
else {
makeCurrent(threadName, className, methodName, lineNumber, l != null, tr);
operator.stopRequest();
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
JavaStackFrame that = (JavaStackFrame) o;
if (myIndex != that.myIndex) return false;
if (!myThreadReference.equals(that.myThreadReference)) return false;
return true;
}
/**
* Move through a list of stack frames, searching for references to code found in the current
* sketch. Return with a RunnerException that contains the location of the error, or if nothing is
* found, just return with a RunnerException that wraps the error message itself.
*/
protected SketchException findException(
String message, ObjectReference or, ThreadReference thread) {
try {
// use to dump the stack for debugging
// for (StackFrame frame : thread.frames()) {
// System.out.println("frame: " + frame);
// }
List<StackFrame> frames = thread.frames();
for (StackFrame frame : frames) {
try {
Location location = frame.location();
String filename = null;
filename = location.sourceName();
int lineNumber = location.lineNumber() - 1;
SketchException rex = build.placeException(message, filename, lineNumber);
if (rex != null) {
return rex;
}
} catch (AbsentInformationException e) {
// Any of the thread.blah() methods can throw an AbsentInformationEx
// if that bit of data is missing. If so, just write out the error
// message to the console.
// e.printStackTrace(); // not useful
exception = new SketchException(message);
exception.hideStackTrace();
listener.statusError(exception);
}
}
} catch (IncompatibleThreadStateException e) {
// This shouldn't happen, but if it does, print the exception in case
// it's something that needs to be debugged separately.
e.printStackTrace();
}
// before giving up, try to extract from the throwable object itself
// since sometimes exceptions are re-thrown from a different context
try {
// assume object reference is Throwable, get stack trace
Method method =
((ClassType) or.referenceType())
.concreteMethodByName("getStackTrace", "()[Ljava/lang/StackTraceElement;");
ArrayReference result =
(ArrayReference)
or.invokeMethod(
thread, method, new ArrayList<Value>(), ObjectReference.INVOKE_SINGLE_THREADED);
// iterate through stack frames and pull filename and line number for each
for (Value val : result.getValues()) {
ObjectReference ref = (ObjectReference) val;
method =
((ClassType) ref.referenceType())
.concreteMethodByName("getFileName", "()Ljava/lang/String;");
StringReference strref =
(StringReference)
ref.invokeMethod(
thread, method, new ArrayList<Value>(), ObjectReference.INVOKE_SINGLE_THREADED);
String filename = strref == null ? "Unknown Source" : strref.value();
method = ((ClassType) ref.referenceType()).concreteMethodByName("getLineNumber", "()I");
IntegerValue intval =
(IntegerValue)
ref.invokeMethod(
thread, method, new ArrayList<Value>(), ObjectReference.INVOKE_SINGLE_THREADED);
int lineNumber = intval.intValue() - 1;
SketchException rex = build.placeException(message, filename, lineNumber);
if (rex != null) {
return rex;
}
}
// for (Method m : ((ClassType) or.referenceType()).allMethods()) {
// System.out.println(m + " | " + m.signature() + " | " + m.genericSignature());
// }
// Implemented for 2.0b9, writes a stack trace when there's an internal error inside core.
method = ((ClassType) or.referenceType()).concreteMethodByName("printStackTrace", "()V");
// System.err.println("got method " + method);
or.invokeMethod(
thread, method, new ArrayList<Value>(), ObjectReference.INVOKE_SINGLE_THREADED);
} catch (Exception e) {
e.printStackTrace();
}
// Give up, nothing found inside the pile of stack frames
SketchException rex = new SketchException(message);
// exception is being created /here/, so stack trace is not useful
rex.hideStackTrace();
return rex;
}
public void breakpointReached(BreakpointEvent event) {
String origMethodName = event.location().method().name();
String methodName = origMethodName.substring(2);
ThreadReference tr = event.thread();
if (vm().canForceEarlyReturn()) {
try {
if ("bytef".equals(methodName)) {
Field theValueField = targetClass.fieldByName("ebyteValue");
ByteValue theValue = (ByteValue) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
/*
* See what happens if we access the stack after the force
* and before the resume. Disabling this since spec says
* the stack is undefined. This type of code can be used to
* pursue just what that means.
*
* StackFrame sf = tr.frame(0);
* List<Value> ll = sf.getArgumentValues();
* for (Value vv: ll) {
* System.out.println("vv = " + vv);
* }
*/
} else if ("charf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("echarValue");
CharValue theValue = (CharValue) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("doublef".equals(methodName)) {
Field theValueField = targetClass.fieldByName("edoubleValue");
DoubleValue theValue = (DoubleValue) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("floatf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("efloatValue");
FloatValue theValue = (FloatValue) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("intf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("eintValue");
IntegerValue theValue = (IntegerValue) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("longf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("elongValue");
LongValue theValue = (LongValue) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("shortf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("eshortValue");
ShortValue theValue = (ShortValue) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("booleanf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("ebooleanValue");
BooleanValue theValue = (BooleanValue) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("stringf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("estringValue");
StringReference theValue = (StringReference) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("classf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("eclassValue");
ClassObjectReference theValue =
(ClassObjectReference) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("classLoaderf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("eclassLoaderValue");
ClassLoaderReference theValue =
(ClassLoaderReference) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("threadf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("ethreadValue");
ThreadReference theValue = (ThreadReference) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("threadGroupf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("ethreadGroupValue");
ThreadGroupReference theValue =
(ThreadGroupReference) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("intArrayf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("eintArrayValue");
ArrayReference theValue = (ArrayReference) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("nullObjectf".equals(methodName)) {
tr.forceEarlyReturn(null);
} else if ("objectf".equals(methodName)) {
Field theValueField = targetClass.fieldByName("eobjectValue");
ObjectReference theValue = (ObjectReference) targetClass.getValue(theValueField);
tr.forceEarlyReturn(theValue);
} else if ("voidf".equals(methodName)) {
VoidValue theValue = vm().mirrorOfVoid();
tr.forceEarlyReturn(theValue);
} else {
failure("failure: Unknown methodName: " + origMethodName);
}
} catch (Exception ex) {
failure("failure: " + ex.toString());
ex.printStackTrace();
}
} else {
System.out.println("Cannot force early return for method: " + origMethodName);
}
}
/*
* Complete the construction of an EventSet. This is called from
* an event handler thread. It upacks the JDWP events inside
* the packet and creates EventImpls for them. The EventSet is already
* on EventQueues when this is called, so it has to be synch.
*/
synchronized void build() {
if (pkt == null) {
return;
}
PacketStream ps = new PacketStream(vm, pkt);
JDWP.Event.Composite compEvt = new JDWP.Event.Composite(vm, ps);
suspendPolicy = compEvt.suspendPolicy;
if ((vm.traceFlags & vm.TRACE_EVENTS) != 0) {
switch (suspendPolicy) {
case JDWP.SuspendPolicy.ALL:
vm.printTrace("EventSet: SUSPEND_ALL");
break;
case JDWP.SuspendPolicy.EVENT_THREAD:
vm.printTrace("EventSet: SUSPEND_EVENT_THREAD");
break;
case JDWP.SuspendPolicy.NONE:
vm.printTrace("EventSet: SUSPEND_NONE");
break;
}
}
ThreadReference fix6485605 = null;
for (int i = 0; i < compEvt.events.length; i++) {
EventImpl evt = createEvent(compEvt.events[i]);
if ((vm.traceFlags & vm.TRACE_EVENTS) != 0) {
try {
vm.printTrace("Event: " + evt);
} catch (VMDisconnectedException ee) {
// ignore - see bug 6502716
}
}
switch (evt.destination()) {
case UNKNOWN_EVENT:
// Ignore disabled, deleted, unknown events, but
// save the thread if there is one since we might
// have to resume it. Note that events for different
// threads can't be in the same event set.
if (evt instanceof ThreadedEventImpl
&& suspendPolicy == JDWP.SuspendPolicy.EVENT_THREAD) {
fix6485605 = ((ThreadedEventImpl) evt).thread();
}
continue;
case CLIENT_EVENT:
addEvent(evt);
break;
case INTERNAL_EVENT:
if (internalEventSet == null) {
internalEventSet = new EventSetImpl(this.vm, null);
}
internalEventSet.addEvent(evt);
break;
default:
throw new InternalException("Invalid event destination");
}
}
pkt = null; // No longer needed - free it up
// Avoid hangs described in 6296125, 6293795
if (super.size() == 0) {
// This set has no client events. If we don't do
// needed resumes, no one else is going to.
if (suspendPolicy == JDWP.SuspendPolicy.ALL) {
vm.resume();
} else if (suspendPolicy == JDWP.SuspendPolicy.EVENT_THREAD) {
// See bug 6485605.
if (fix6485605 != null) {
fix6485605.resume();
} else {
// apparently, there is nothing to resume.
}
}
suspendPolicy = JDWP.SuspendPolicy.NONE;
}
}
public String toString() {
return eventName() + " in thread " + thread.name();
}
@Override
public int hashCode() {
int result = super.hashCode();
result = 31 * result + myThreadReference.hashCode() * 31 + myIndex;
return result;
}